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EWG's Tap Water Database — 2019 UPDATE

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Styrene

Municipality of Anchorage

Styrene is a volatile cancer-causing chemical used for manufacturing Styrofoam (polystyrene) and other plastics. Releases from industrial production sites and hazardous waste landfills cause styrene contamination in drinking water. Read More.

In addition to increasing the risk of cancer, styrene can also damage the liver and the nervous system. California set a public health goal for styrene in drinking water at 0.5 parts per billion. The federal Maximum Contaminant Level (MCL) allows up to 100 parts per billion of styrene in water, which is 200 times more than the California recommended level.

Click here to read more about carcinogenic VOCs.

 

59

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND110ND
2013ND120ND
2014ND20ND
2015ND130ND
2016ND100ND
2017ND110ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for styrene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for styrene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1970s. This limit may not fully protect against the risk of cancer due to styrene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-07-19VO*A1207321-01CND
2012-11-28VO*A1211347-01CND
2012-11-28VO*A1211347-02CND
2012-11-28VO*A1211347-03CND
2012-11-28VO*A1211347-04CND
2012-11-28VO*A1211347-05CND
2012-11-28VO*A1211347-06CND
2012-11-28VO*A1211347-07CND
2012-11-28VO*A1211347-08CND
2012-11-28VO*A1211347-09CND
2012-11-28VO*A1211347-10CND
2013-04-04VO*A1304163-01BND
2013-09-24VO*A1309437-01CND
2013-10-25VO*A1310536-02CND
2013-10-25VO*A1310536-05CND
2013-10-25VO*A1310536-04CND
2013-10-25VO*A1310536-03CND
2013-10-25VO*A1310536-01CND
2013-10-31VO*A1310614-01CND
2013-10-31VO*A1310614-02CND
2013-10-31VO*A1310614-03CND
2013-10-31VO*A1310614-04CND
2013-11-08VO*A1311145-01CND
2014-05-13VO*A1405164-01CND
2014-09-09VO*A1409133-01CND
2015-01-12VO*A1501154-01CND
2015-08-18VO*1154627004ND
2015-08-18VO*1154627003ND
2015-08-18VO*1154627001ND
2015-08-18VO*1154626001ND
2015-08-18VO*1154627002ND
2015-08-19VO*1154667001ND
2015-08-20VO*1154709001ND
2015-08-20VO*1154709002ND
2015-08-20VO*1154709003ND
2015-08-20VO*1154709004ND
2015-09-23VO*1155578001ND
2015-10-30VO*1156488001ND
2016-07-13VO*280-85692-1ND
2016-07-13VO*280-85692-2ND
2016-07-13VO*280-85692-4ND
2016-07-18VO*280-85921-1ND
2016-07-18VO*280-85921-2ND
2016-07-19VO*280-85945-1ND
2016-08-02VO*280-86589-1ND
2016-08-02VO*280-86590-1ND
2016-08-29VO*280-87677-1ND
2016-08-29VO*280-87677-3ND
2017-08-21VO*3765073ND
2017-08-21VO*3765106ND
2017-08-21VO*3766066ND
2017-08-21VO*3766073ND
2017-08-28VO*3768874ND
2017-08-28VO*3768882ND
2017-08-28VO*3768898ND
2017-08-28VO*3768906ND
2017-08-29VO*3769507ND
2017-10-02VO*3792416ND
2017-10-31VO*440-195632-1ND